ViewfinderVR: Configurable Viewfinder for Selection of Distant Objects in VR
Woojoo Kim, Shuping Xiong

TL;DR
ViewfinderVR introduces a virtual viewfinder panel in VR that improves the speed and accuracy of selecting distant objects, outperforming traditional raycasting methods in user tests.
Contribution
The paper presents a novel viewfinder technique for VR that enhances distant object selection through a customizable virtual panel, combining ray and touch interactions.
Findings
ViewfinderVR outperforms raycasting in task performance
Touch interaction yields better results than ray-based selection
Reduced workload and improved user experience with ViewfinderVR
Abstract
Selection is one of the fundamental user interactions in virtual reality (VR) and 3D user interaction, and raycasting has been one of the most popular object selection techniques in VR. However, the selection of small or distant objects through raycasting has been known to be difficult. To overcome this limitation, this study proposed a new technique called ViewfinderVR for improved selection of distant objects in VR, utilizing a virtual viewfinder panel with a modern adaptation of the through-the-lens metaphor. ViewfinderVR enables faster and more accurate target selection by allowing customization of the interaction space projected onto a virtual panel within reach, and users can select objects reflected on the panel with either ray-based or touch interaction. Experimental results of Fitts' law-based tests with 20 participants showed that ViewfinderVR outperformed traditional…
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